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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 524de4a84f503918d4802a291bdc272d126e1b68f1d0c48fe93bf84a4e19d969. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.

Database Entry


ZLoader


Vendor detections: 7


Maldoc score: 3


Intelligence 7 IOCs YARA 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 524de4a84f503918d4802a291bdc272d126e1b68f1d0c48fe93bf84a4e19d969
SHA3-384 hash: 42174f7167f46ad6bc5500fadeb83f8bcee816c0e60521f86adc3d4dd74d7101b421a04cbf4858939d96e46c533a27d6
SHA1 hash: 2a9be240a1503cb2f65371d01a3a241a95db75d5
MD5 hash: c3b9fb6ca422802c3af00cb464ad5a26
humanhash: july-nevada-ink-may
File name:SecuriteInfo.com.Exploit.Siggen3.8790.14645.723
Download: download sample
Signature ZLoader
Create hunting rule
File size:31'744 bytes
First seen:2021-01-27 02:08:25 UTC
Last seen:Never
File type:Excel file xlsx
MIME type:application/vnd.ms-excel
ssdeep 768:/YPXk3hbdlylKsgqopeJBWhZFGkE+cL2NdAJWFRHLYuNb:8Xk3hbdlylKsgqopeJBWhZFGkE+cL2Nn
TLSH 19E22EE7F7C6AC45CE494779486787A07316FC216B57838B3385F32A1F71AC0894365A
Reporter SecuriteInfoCom
Tags:ZLoader

Office OLE Information

This malware samples appears to be an Office document. The following table provides more information about this document using oletools and oledump.

OLE id
Maldoc score: 3
Application name is Microsoft Excel
Office document is in OLE format
OLE dump

MalwareBazaar was able to identify 3 sections in this file using oledump:

Section IDSection sizeSection name
14096 bytesDocumentSummaryInformation
24096 bytesSummaryInformation
321587 bytesWorkbook
OLE vba

MalwareBazaar was able to extract and deobfuscate VBA script(s) the following information from OLE objects embedded in this file using olevba:

TypeKeywordDescription
AutoExecAuto_OpenRuns when the Excel Workbook is opened
SuspiciousBase64 StringsBase64-encoded strings were detected, may be used to obfuscate strings (option --decode to see all)

Intelligence

File Origin
# of uploads :
1
# of downloads :
171
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
SecuriteInfo.com.Exploit.Siggen3.8790.14645.723
Verdict:
No threats detected
Analysis date:
2021-01-27 02:14:54 UTC
Tags:
macros
Link:
https://app.any.run/tasks/f6e0b713-44ad-4ae2-8f3b-e58b147adf91

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Legit
File type:
application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
Has a screenshot:
False
Contains macros:
True
Detection(s):
SecuriteInfo.com.Exploit.Siggen3.8790.14645.723.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.Zloader.ComfortablyNumb.M3.20201208.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.Excel4.BlackSubmarines.2020.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file
Creating a process with a hidden window
Launching a process by exploiting the app vulnerability
Result
Verdict:
Malicious
File Type:
Legacy Office File
Link:
https://app.docguard.net/524de4a84f503918d4802a291bdc272d126e1b68f1d0c48fe93bf84a4e19d969/results/dashboard
Result
Threat name:
Unknown
Detection:
malicious
Classification:
spre.expl.evad
Score:
96 / 100
Link:
https://www.joesandbox.com/analysis/591432
Signature
Document exploit detected (creates forbidden files)
Document exploit detected (process start blacklist hit)
Injects code into the Windows Explorer (explorer.exe)
Microsoft Office drops suspicious files
Multi AV Scanner detection for submitted file
Potential malicious VBS script found (has network functionality)
Potential malicious VBS script found (suspicious strings)
System process connects to network (likely due to code injection or exploit)
Yara detected Run DLL Via DCOM
Yara detected VBS Downloader Generic
Behaviour
Behavior Graph:
Download SVG
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/524de4a84f503918d4802a291bdc272d126e1b68f1d0c48fe93bf84a4e19d969/
Threat name:
Script-Macro.Downloader.ZLoader
Create hunting rule
Status:
Malicious
First seen:
2021-01-27 02:09:05 UTC
AV detection:
11 of 46 (23.91%)
Threat level:
  3/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=kjg6jkcpka4rrveafiurxxbhfujg4g3i6himjd7jhp4eutqz3fuq._file
Result
Malware family:
n/a
Score:
  10/10
Tags:
macro ransomware xlm
Link:
https://tria.ge/reports/210127-bwzsme3b5e/
Behaviour
Enumerates system info in registry
Modifies Internet Explorer settings
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of SetWindowsHookEx
Checks processor information in registry
Enumerates physical storage devices
JavaScript code in executable
Malware Config
Dropper Extraction:
https://gadgetswolf.com/v.php
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
ZLoader
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/524de4a84f503918d4802a291bdc272d126e1b68f1d0c48fe93bf84a4e19d969

YARA Signatures

MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.

Rule name:ach_ZLoader_xls_20210125
Create hunting rule
Author:abuse.ch
Description:Detects ZLoader XLS
Rule name:Email_stealer_bin_mem
Create hunting rule
Author:James_inthe_box
Description:Email in files like avemaria
Rule name:IPPort_combo_mem
Create hunting rule
Author:James_inthe_box
Description:IP and port combo
Rule name:Select_from_enumeration
Create hunting rule
Author:James_inthe_box
Description:IP and port combo
Rule name:SharedStrings
Create hunting rule
Author:Katie Kleemola
Description:Internal names found in LURK0/CCTV0 samples
Rule name:UAC_bypass_bin_mem
Create hunting rule
Author:James_inthe_box
Description:UAC bypass in files like avemaria

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Comments